Spring-mattress.



No. 800,541. PATENTBD SEPT. 26, 1905. W. BODETTE.

SPRING MATTRESS.

urmcnmn FILED DEO.15, 1902.

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SPFHNG-IVIATTRESS.

Specification of Letters Patent.

Patented Sept. 26, 1905.

Application filed December 15, 1902. Serial No. 135,349-

TO ctlZ who'll) it in/(Ly concern:

Be it known that I, l/VILLIAM Bonn'r'rn, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented new and useful Improvements in Spring-Mattresses, of which the following is a specification.

This invention relates to wire mattresses, and especially to a tension mechanism therefor, and has for its objects to produce a comparatively simple and inexpensive device of this character which may be readily applied to the various forms of bedsteads now in general use' and which in practice may be readily manipulated for varying the tension of the mattress from time to time as required.

A further object of the invention is to provide a tension-roller having an outer shell or surface tapered from its center toward its ends to thereby exert the maximum tension upon the mattress at its center and one wherein the fastening devices for securing the outer shell in place subserve the further function of connecting the sections of the inner clamping member or core.

To these ends the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanyingdrawings, Figure 1 is a plan view of a portion of a bedstead-frame, showing the improved tension device applied thereto. Fig. 2 is a central longitudinal section through the tension-roller. Fig. 3 is a detail transverse section taken on the line 3 3 of Figs. 1 and 2. Fig. i is an end elevation of the roller. Fig. 5 is a side elevation of one I of the roller-supporting brackets. Fig. 6 is a similar view of another form of bracket.

Referring to the drawings, and particularly to Figs. 2 and 3, it will be seen that my improved tension-roller comprises an outer skeleton frame or shell 1, constituting the surface of the roller, and an inner core 2, upon which the shell 1 is applied and to which it is secured by means of transverse connecting members or bolts 3. The core 2 is composed of two corresponding sections i 4, adapted to he one upon the other and have their inner meeting faces corrugated longitudinally, as at 5, whereby they will securely engage and hold the end of the spring-mattress, which in practice is intended to be clamped between them, there being cast onto the ends of the core ratchet-wheels 6,which are likewise each made in two sections, these sections being carried, respectively, by the core-sections and adapted-when the latter are assembled to produce complete circular ratchets, as illustrated more clearly in Fig. 4. The outer skeleton frame 1 is also made up of a pair of sections in order that it may be readily applied upon the core and, furthermore, as a Whole comprises a plurality of longitudinal strips or Webs 7 and transverse connecting portions or Webs 8. At the ends of the roller there are formed spindles or axles 9, each having an angular portion 10 and a circular portion 11, these circular portions being designed for engagement with brackets 12,b0lted or otherwise secured to the side rails of the bedstead, as seen in Fig. 1,

said brackets having slots or seats 13 for the reception of the spindles. The brackets 12 each have a pawl 14: designed for engagement with the ratchet 6, these pawlsbeing normally pressed to engaging position by means of springs 15.

In practice the mattress is secured at one end in any appropriate manner to the mattressframe or bedstead and has its other end inserted and clamped between the sections 1 of the core, after which the outer surface frame or shell 1 is applied to the roller and secured by means of the bolts 3, which also serve to unite the sections 4 and retain the mattress in position. The parts being properly assembled, if it is desired to place the mattress under tension a wrench or other tool is engaged with the squared portion 10 of one of the spindles and the roller as a whole rotated, reverse rotation being prevented by means of the pawls 14. It is to be particularly noted that when the mattress is placed under tension this tension, owing to the roller being tapered from its center toward its ends, is greatest at the longitudinal center of the mattress, thereby preventingthe latter sagging at its center.

In some instances it may be found desirable to provide only one endof the roller with the pawl-and-ratchet mechanism, in which event the other end of the roller will be received by a plane bracket 16, such as illustrated in Fig. 6.

From the foregoing it is apparent that I produce a simple and highly-efficient device admirably adapted for the attainment of the ends in View, it being understood that minor changes in the details herein stated may be resorted to Without departing from the spirit of the invention.

IO greatest sectional dimension at its central point and decreasing therefrom toward its ends and means for securing the sections together to form a roller.

In testimony whereof I afltix my signature in presence of tWo Witnesses.

WILLIAM BODETTE.

Witnesses:

BARNETT BROWN, WILLIAM BARNETT BROWN. 

